BS EN 1837:2020 pdf free.Safety of machinery一Integral lighting of machines.
BS EN 1837 This document specifies the parameters of integral lighting systems designed to provide ilumination in and/or at both stationary and mobile machines to enable the safe use of the machine and the efficient performance of the visual task within and/or at the machine to be carried out by the operator.This document does not specify lighting systems mounted on the machine to specifically iluminate visual tasks outside the machine. The function and requirements of these systems are specified in the European standard dealing with the lighting of work places, see EN 12464-1 and EN 12464-2 for further information.This document does not specify additional requirements for the operation of lighting systems:一in severe conditions (extreme environmental conditions such as freezer applications, high temperatures, etc.); subject to special rules (e.g. explosive atmospheres);  -where the transmittance is reduced by environmental conditions, such as smoke, splashing, etc.Machinery shall be supplied with integral lighting suitable for the operations concerned where the absence of the integral lighting is likely to cause a risk despite ambient lighting of normal intensity.When arranging the lighting for machines, ergonomic and lighting-engineering principles shall be taken into account.
The visual tasks to be carried out in and/or at the machine vary in size, contrast, position and speed of movement. Thus for adequate vision, the exact lighting condition required shall be determined from detailed task analysis. This shall include consideration of the requirements given in 4.2 to 4.8. The lighting requirements specified in this document are based on average difficulty of visual tasks, found in the work space during intended use of the machine (normal operation, abnormal operation,servicing). For specific tasks, reference shall be made to the relevant standards on work place lighting (EN 12464-1:2011 and EN 12464-2:2014). The definition of the specific tasks considered shall be included in the information for use supplied with the machine (see Clause 7).The integral lighting system shall avoid direct glare (disability and discomfort glare) both to the machine operator and other workers in adjacent areas by preventing any direct view onto the integral light source. Glare caused by reflections from the integral lighting of the machine during use shall be avoided within the task area.BS EN 1837 pdf download.